Pass mark 75% from twenty randomly chosen questions.
#1 Lines joining places of equal atmospheric pressure are called:
#2 If flying on a hazy afternoon in Britain, in which direction will visibility be greatest?
Looking into the sun
#3 If ice forms over the static vent of an aircraft and blocks it during the climb, the altimeter will read:
a reverse reading, showing a decrease in altitude
a constant altitude
#4 As a parcel of air rises, it cools by the process of:
relative humidity inversion
expulsion of long-wave radiation
#5 What is an area of high pressure called?
A geostrophic progression
#6 In the northern hemisphere, an aircraft flying from an area of high to low pressure will experience:
Due to the anti-clockwise motion of the airmass, and going towards the low pressure area, the wind will be from the left (port) causing a right (starboard) drift.
#7 What is the wind that flows down the side of mountain slopes at night called?
Trough or ridge
#8 The lapse rate for a dry parcel of air is:
3°C / 1000 feet
1.5°C / 1000 feet
13.25°C / 1000 feet
1.98°C / 1000 feet
#9 At the passage of a warm front you would expect:
Formation of towering cumulonimbus clouds
Smooth clear conditions
Low stratus and poor visibility
#10 Orographically formed clouds occur:
Over mountain ranges, large hills or sloping plains
Only at night-time
Whenever the eddying motion associated with mechanical turbulence sets off large scale vertical movements
Over the sea during the summer
#11 When a wind changes direction from Southerly to South-Westerly, it is said to have:
Veered in the northern hemisphere and backed in the southern hemisphere
Veered in either hemisphere
Backed in the northern hemisphere and veered in the southern hemisphere
Backed in the southern hemisphere and veered in the northern hemisphere
#12 One hectopascal (hPa) represents a change in altitude of:
#13 Select the true statement concerning isobar and windflow patterns around high and low pressure systems, as shown on synoptic charts:
When the isobars are close together, the pressure gradient force is stronger and wind velocities are higher.
When the isobars are far apart, crests of standing waves may be marked by lenticular clouds.
Surface winds flow perpendicular to the isobars.
#14 An occluded front is where:
The frontal system inverts itself and results in an anti-cyclone
The cold front catches up with the warm front
The frontal system as a whole stops moving
The warm front catches up with the cold front
#15 The atmospheric situation where temperature increases with height is called a(n):
#16 A TAF is a weather:
#17 A cold front moves ________ a warm front.
at the same speed as
#18 In the northern hemisphere, if you stand with your back to the wind, where would you expect the low pressure region to be?
Ahead of you
To your right
To your left
#19 Take a look at this METAR: LMML 221530Z 18007KT -DZ BR OVC004 14/13 Q1003 – What Date and Time this report was issued?
2nd month 21st day 0530 GMT
30th day 2215 GMT
13th day 1003 GMT
22nd day 1530 GMT
#20 The atmosphere:
Is deeper at the poles than the equator
Is of even depth
Is less deep at the poles than the equator
always increases in density at higher altitudes